Menaquinol oxidase (H+-transporting)

Menaquinol oxidase (H^+-transporting)
Identifiers
EC number	1.10.3.12
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

Menaquinol oxidase (H⁺-transporting) (EC 1.10.3.12, cytochrome aa3-600 oxidase, cytochrome bd oxidase) is an enzyme with systematic name menaquinol:O2 oxidoreductase (H+-transporting).^[1][2][3] This enzyme catalyses the following chemical reaction

2 menaquinol + O₂ $\rightleftharpoons$ 2 menaquinone + 2 H₂O

Cytochrome aa3-600, one of the respiratory oxidases from Bacillus subtilis, is a member of the heme-copper family of oxygen reductases.

References

1. Lauraeus, M. and Wikstrom, M. (1993). "The terminal quinol oxidases of Bacillus subtilis have different energy conservation properties". J. Biol. Chem. 268 (15): 11470–11473. PMID 8388393.
2. Lemma, E., Simon, J., Schagger, H. and Kroger, A. (1995). "Properties of the menaquinol oxidase (Qox) and of qox deletion mutants of Bacillus subtilis". Arch. Microbiol. 163 (6): 432–438. doi:10.1007/bf00272132. PMID 7575098.
3. Yi, S.M., Narasimhulu, K.V., Samoilova, R.I., Gennis, R.B. and Dikanov, S.A. (2010). "Characterization of the semiquinone radical stabilized by the cytochrome aa₃-600 menaquinol oxidase of Bacillus subtilis". J. Biol. Chem. 285 (24): 18241–18251. doi:10.1074/jbc.M110.116186. PMC 2883873. PMID 20351111.

External links

• Menaquinol oxidase (H -transporting) at the US National Library of Medicine Medical Subject Headings (MeSH)